Abstract [en]

We previously reported on the effect of surface properties on inkjet print quality and print functionality. Printing can furthermore be used to effectively functionalize paper surfaces or to modify surface properties of paper for subsequent inkjet printing. Migration of molecules and particles from the paper surface may cause destabilization of the pigment dispersion and result in aggregation of pigments, as shown previously for different concentrations of calcium chloride at the surface of uncoated paper. In this work, utilizing standardized methods such as inkjet printing, ink draw down and print density measurements, it is shown that surface functionalisation using di- and trivalent salts may effectively destabilize a pigment dispersion, causing aggregation of pigments which in turn has a major impact on the print quality.